http://llvm.org/bugs/show_bug.cgi?id=14574
Bug #: 14574
Summary: Loop Vectorizer: Miscompile of gperftools (common.cc)
Product: libraries
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P
Component: Core LLVM classes
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
The LoopVectorizer miscompiles this loop in gperftools:
for (size_t cl = 1; cl < kNumClasses; ++cl) {
num_objects_to_move_[cl] = NumMoveSize(ByteSizeForClass(cl));
}
I suspect that there is a bug in the if-conversion of "NumMoveSize".
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